7030 CD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7030 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
8.35 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
150 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
225 mm
Outside diameter tolerance
-0.004mm to 0
Width
70 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
23.812 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
63225 lbf
Radial static load rating
85500 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7030 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7030 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Manufactured to P4A tolerance class, this bearing delivers superior running precision. Its universal matchable (SU) design allows for flexible mounting arrangements in sets, while the light preload (Class B) ensures optimal stiffness and minimal deflection under operational conditions. Engineered to handle combined loads with high efficiency, this bearing is ideal for high-speed, high-rigidity applications where precision is paramount.
7030 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7030 CD/P4ADGB contains specific technical designations:
- 7030: Basic bearing series, indicating a 150mm bore, 225mm OD, and 70mm width.
- C: Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity.
- D: Indicates the bearing is supplied as part of a universally matchable pair (SU).
- P4A: Specifies the tolerance class, representing very high dimensional and running accuracy exceeding ABEC 7/ISO P4.
- DGB: Signifies a Universal Matchable (SU) bearing pair with a specific preload and axial internal clearance for a "back-to-back" (DB) mounting arrangement.
7030 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class and light preload provide exceptional rotational accuracy and system stiffness, minimizing runout and vibration.
- Superior Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to support significant combined radial and axial loads.
- High-Speed Capability: The phenolic resin cage offers low weight and excellent performance at high speeds, contributing to a limiting speed of 11,000 rpm. The design minimizes friction and heat generation.
- Universal Matching: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various preloaded arrangements (e.g., back-to-back, face-to-face) to achieve the desired operational stiffness and accuracy without selective matching.
7030 CD/P4ADGB Bearing Typical Application Areas
This high-precision bearing is ideally suited for demanding applications in:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Frequency Motors and precision spindles
- Industrial Pumps and Compressors
- Precision Robotics and automation equipment
- Aerospace and Defense instrumentation and control systems
